The Commercial battery storage ROI calculator asks a few questions about your site and its bill, then ranks the batteries in the Kilowatts shop that suit offices and small commercial sites. The numbers below are example rates and example figures used for this guide, not recommendations. Use the figures on your own business bill. As the page says, results are a guide, not a quote.
Step 1: Now a business site
Go to Batteries on kilowatts.uk. Under Home, business or industrial, select Open the business calculator.
Step 2: Solar: Yes
The calculator asks one question at a time. First: Do you have solar panels, or are you installing them with the battery? This example chooses Yes.
Step 3: Solar generation
Enter your solar system's average daily generation in kWh/day. You'll find it on the site's inverter or generation meter. This example uses 140. Select Continue.
Step 4: Site use
Enter the site's total annual electricity consumption in kWh/year from the business electricity bill. This example uses 25000.
Then choose how much of the site's electricity is used outside opening hours. This example uses A normal mix.
Step 5: Example day rate
Enter the day unit rate from the site's latest bill in p/kWh. The example rate is 28. Your answers so far appear as chips above each question.
Step 6: Example off-peak rate
Enter the off-peak or night rate. The example rate is 7. If the site has one rate, enter the same number as the day rate.
Step 7: Example export rate
Enter what you are paid per kWh for electricity you export. The example rate is 15. Enter 0 if you are not paid for export.
Step 8: Backup gateway: No
Do you want a backup gateway? A gateway runs chosen circuits, or the whole site, from the battery during a power cut, and it has to be the same brand as the battery. This example chooses No.
Step 9: Site results
The results show Best batteries for this site, from the models in the Kilowatts shop, with a summary of the site. Below that are a 10-year cumulative return chart, a Top 5 comparison chart, and buttons to rank by Best ROI, Fastest Payback, Best Fit, Lowest Cost or Longest Life. Select New comparison to start again.
The figures are calculator estimates based on the figures you entered. They are not advice or a quote.
Also see: Home battery calculator · Industrial: tell us about your project
Questions? Call 0800 009 6058.